Physical Activity and Cardiovascular Risk in Black Girls

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00005437
Recruitment Status : Completed
First Posted : May 26, 2000
Last Update Posted : June 24, 2005
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:
To conduct a longitudinal study investigating the physical activity patterns, the psychosocial predictors of physical activity, and the effects of physical activity changes on blood pressure and body fatness in a cohort of African-American girls, ages 11-17.

Condition or disease
Cardiovascular Diseases Heart Diseases Hypertension Obesity

Detailed Description:


The study contributed to an underdeveloped area of research. Physical activity is recommended as a nonpharmacological means to modify hypertension and obesity, two cardiovascular risk factors. African-American women have low levels of physical activity and high rates of obesity, hypertension, and mortality from coronary heart disease, diabetes, and hypertensive diseases. In 1992, there was an absence of longitudinal data about the physical activity habits of African-American girls even though a decline in physical activity during adolescence had been reported in other subpopulations.


Within the framework of puberty and maturation, the study: 1) described longitudinal patterns of physical activity; 2) assessed longitudinal changes in physical activity and concomitant changes in blood pressure and body fatness; and 3) determined psychosocial predictors of changes in physical activity. The investigators hypothesized that there would be a monotonic decrease in physical activity and that psychosocial variables would predict changes in physical activity. The study population consisted of 189 sixth grade, mostly African-American, girls in Fort Bend Independent School District, Missouri City, Texas. The girls were measured for four and a half years, ages 11 or 12 at entry of the study. Anthropometry, sexual maturation, blood pressure, physical activity habits and psychosocial predictors were measured twice a year for a total of nine examinations. Data on dietary, smoking and drinking habits were collected annually. Activity patterns, psychosocial predictors and other habits were assessed by interviews and questionnaires. Sexual maturation was assessed by menarche and the Tanner stages. Skinfold and circumference measures determined body fatness and body fat distribution.

Study Type : Observational
Observational Model: Natural History
Study Start Date : February 1992
Study Completion Date : January 1998

Information from the National Library of Medicine

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Ages Eligible for Study:   11 Years to 17 Years   (Child)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No
No eligibility criteria

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00005437

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
OverallOfficial: Wedell Taylor The University of Texas Health Science Center, Houston